random_function

用于求解一维气体动力学的欧拉方程代码，采用戈东诺夫格式，显式推进，可仿真非定常激波管(For solving one-dimensional Euler equations of gas dynamics code, using Godunov format, explicit advance, can simulate unsteady shock tube)

说明：  使用时间序列分析AR方法对油价进行分析，以及预测。采用BIC准则进行判阶，最小二乘法进行参数估计(AR time series analysis using the method of price analysis and forecasting. BIC criteria used sentence order, the least square method for parameter estimation)

现有的贪婪迭代类压缩感知重构算法均基于最小二乘对信号进行波形估计，未考虑到可能将量测噪声引入信号估计的情况．针对以上不足，提出了一种基于线性Kalman滤波的压缩感知弱匹配去噪重构算法(Existing greedy iterative reconstruction algorithms class compressed sensing the signal waveform based on least squares estimation does not take into account the possible introduction of the measurement noise signal estimation situation. For the above shortcomings, we propose a linear Kalman filter based on compressed sensing reconstruction algorithm denoising weak match)

说明：  本模拟是采用分步傅里叶的解，求光孤子在光线内传输过程数值求解薛定谔方程。方程是激光器在光纤中传输的过程。(In this simulation, the fractional Fourier solution is used to solve the Schrodinger equation. The equation is the process of laser transmission in fiber.)

cpsd 单独子函数，可编译后直接应用于自己的程序，方便快捷，使用fftw库(cpsd separate sub-functions can be applied directly after compiling its own procedures, convenient use fftw library)

分数阶fourier变换程序，基于插值和抽取操作和卷积运算的快速算法。(Fractional fourier transform procedures, based on interpolation and extraction operation and fast algorithm for convolution operation.)

lingo软件分享,lingo是专门用于解决规划问题的数值计算工具，操作简便(Lingo Software Sharing, Lingo is a numerical calculation tool specially used to solve planning problems. It is easy to operate.)

说明：  数字信号处理DSP中，DFT离散傅里叶变换等上机作业。(In digital signal processing DSP, DFT discrete Fourier transform.)

Umat Abaqus for plasticity

二维交错网格声波模拟（加PML边界条件）地震(Two-dimensional staggered grid acoustic simulation (plus PML boundary conditions) earthquake)